Aijiren C0000070 Vial Micro-Insert 200ul, 5.8x28.5mm, Clear . Polyspring can protect vial's bottom and insert. The Maximum Volume is 200ul ,Standard Volume is 100ul; Content: 100 pcs/pk. Micro Inserts for Hplc Vials. Volume: 150ul, 250ul, 300ul. Dimension: 5x29mm, 6x31mm. Material: Clear Glass Suit for: 1.5/2ml hplc vial. Bottom: flat, concial